Signed-off-by: Gerd Hoffmann <kra...@redhat.com> --- docs/usb2.txt | 15 +++++++++++++++ 1 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/docs/usb2.txt b/docs/usb2.txt index 228aa33..d17e3c0 100644 --- a/docs/usb2.txt +++ b/docs/usb2.txt @@ -55,6 +55,21 @@ try ... ... then use "bus=ehci.0" to assign your usb devices to that bus. +xhci controller support +----------------------- + +There also is xhci host controller support available. It got alot +less testing than ehci and there are a bunch of known limitations, so +ehci may work better for you. On the other hand the xhci hardware +design is much more virtualization-friendly, thus xhci emulation uses +less ressources (especially cpu). If you wanna give xhci a try +use this to add the host controller ... + + qemu -device nec-usb-xhci,id=xhci + +... then use "bus=xhci.0" when assigning usb devices. + + More USB tips & tricks ====================== -- 1.7.1
